Indicates whether Spanning Tree protocol is
enabled for this Virtual LAN.
If the device only supports a single global
Spanning Tree PVST+ Protocol enable/disable
for all the existing VLANs, then the object
value assigned to this VLAN will be applied
to the object values of all the instances
in this table which do not have the value
of notApplicable(3).
This object is deprecated and replaced by
stpxPVSTVlanEnable in
CISCO-STP-EXTENSIONS-MIB.